DE3071448D1 - Gas flow measuring apparatus - Google Patents

Gas flow measuring apparatus

Info

Publication number
DE3071448D1
DE3071448D1 DE8080104949T DE3071448T DE3071448D1 DE 3071448 D1 DE3071448 D1 DE 3071448D1 DE 8080104949 T DE8080104949 T DE 8080104949T DE 3071448 T DE3071448 T DE 3071448T DE 3071448 D1 DE3071448 D1 DE 3071448D1
Authority
DE
Germany
Prior art keywords
gas flow
measuring apparatus
flow measuring
gas
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8080104949T
Other languages
German (de)
Inventor
Kanemasa Sato
Sadayasu Ueno
Kazuhiko Miya
Yoshishige Oyama
Yutaka Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3071448D1 publication Critical patent/DE3071448D1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F5/00—Measuring a proportion of the volume flow

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
DE8080104949T 1979-08-22 1980-08-20 Gas flow measuring apparatus Expired DE3071448D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54105899A JPS6045806B2 (en) 1979-08-22 1979-08-22 Air flow meter using heating resistor

Publications (1)

Publication Number Publication Date
DE3071448D1 true DE3071448D1 (en) 1986-04-03

Family

ID=14419726

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080104949T Expired DE3071448D1 (en) 1979-08-22 1980-08-20 Gas flow measuring apparatus

Country Status (4)

Country Link
US (1) US4381668A (en)
EP (1) EP0025149B2 (en)
JP (1) JPS6045806B2 (en)
DE (1) DE3071448D1 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3130626A1 (en) * 1981-08-01 1983-02-17 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR MEASURING THE MASS OF A FLOWING MEDIUM
DE3130624A1 (en) * 1981-08-01 1983-02-17 Robert Bosch Gmbh, 7000 Stuttgart AIR MEASURING DEVICE
US4418568A (en) * 1981-09-10 1983-12-06 Eaton Corporation Hot film fluid flowmeter with auxiliary flow sensing
JPS58105013A (en) * 1981-12-18 1983-06-22 Hitachi Ltd Hot-wire flow meter
US4509371A (en) * 1983-01-07 1985-04-09 Carrier Corporation Venturi flow measuring device and method
US4571996A (en) * 1984-08-10 1986-02-25 Allied Corporation Air flow sensor
GB2205947B (en) * 1987-06-19 1991-09-04 British Gas Plc Flowmeter
GB8720357D0 (en) * 1987-08-28 1987-10-07 Thorn Emi Flow Measurement Ltd Fluid metering system
FR2619892B1 (en) * 1987-08-31 1991-08-16 Gaz De France METHOD FOR PREVENTING FOULING OF AN ANOMALY DETECTION DEVICE AND DEVICE FOR CARRYING OUT THIS METHOD
US4848163A (en) * 1987-10-30 1989-07-18 Timeter Instrument Corporation Extended range linear flow transducer
US4913192A (en) * 1989-04-03 1990-04-03 Unit Instruments, Inc. Gas flow control apparatus
DE3916056A1 (en) * 1989-05-17 1990-11-22 Kuipers Ulrich Measuring mass and/or vol. throughflow and/or density and/or viscosity - using sensor and choke and/or baffle element to detect differential pressure of fluid
GB2253164B (en) * 1991-02-22 1994-10-05 Hoechst Uk Ltd Improvements in or relating to electrostatic coating of substrates of medicinal products
GB9105699D0 (en) * 1991-03-18 1991-05-01 British Gas Plc Supplying fluid
JP3182807B2 (en) * 1991-09-20 2001-07-03 株式会社日立製作所 Multifunctional fluid measurement transmission device and fluid volume measurement control system using the same
DE69427645T2 (en) * 1993-10-06 2002-05-08 Unit Instr Inc APPARATUS FOR HANDLING PROCESS FLUIDS
US6575022B1 (en) 1995-11-25 2003-06-10 Cummins Engine Company, Inc. Engine crankcase gas blow-by sensor
EP0874976B1 (en) * 1996-01-17 2002-04-10 Micro Motion Incorporated Bypass type flowmeter
US5804718A (en) * 1996-04-24 1998-09-08 Denso Corporation Airflow meter having an inverted u-shape bypass passage
JP3783896B2 (en) 1997-10-13 2006-06-07 株式会社デンソー Air flow measurement device
JP2003139593A (en) * 2001-11-07 2003-05-14 Hitachi Ltd On-vehicle electronic apparatus and thermal flowmeter
JP4168417B2 (en) * 2002-11-18 2008-10-22 株式会社山武 Fluid detection device
DE10316342A1 (en) * 2003-04-10 2004-10-28 Daimlerchrysler Ag Mass flow, especially air mass flow, measurement device for a combustion engine, has a separate measurement channel which has an angled inlet relative to the main flow direction
US7228729B1 (en) 2006-07-26 2007-06-12 Lincoln Industrial Corporation Apparatus and method for testing fuel flow
US8182143B2 (en) * 2006-08-09 2012-05-22 Spectrasensors, Inc. Mobile temperature sensor
US7587931B2 (en) * 2008-01-29 2009-09-15 Lincoln Industrial Corporation Apparatus and method for testing fuel flow
US8393228B2 (en) * 2010-05-18 2013-03-12 Mindray Medical Sweden Ab Method and system for measuring a flow
DE102011115768B4 (en) * 2011-10-12 2014-05-08 Hydrometer Gmbh gas Meter
EP2589821B1 (en) * 2011-11-03 2017-08-02 Heraeus Medical GmbH Apparatus and method for the generation of vacuum for vacuum cementing systems
US9795757B2 (en) 2013-06-28 2017-10-24 Vyaire Medical Capital Llc Fluid inlet adapter
US9962514B2 (en) 2013-06-28 2018-05-08 Vyaire Medical Capital Llc Ventilator flow valve
US9541098B2 (en) 2013-06-28 2017-01-10 Vyaire Medical Capital Llc Low-noise blower
US9707369B2 (en) * 2013-06-28 2017-07-18 Vyaire Medical Capital Llc Modular flow cassette
US9746359B2 (en) 2013-06-28 2017-08-29 Vyaire Medical Capital Llc Flow sensor
US9297679B2 (en) * 2014-01-14 2016-03-29 General Electric Company Flowmeter with a flow conditioner formed by a protrusion having restriction provided upstream of the measurement section
JP2016090413A (en) 2014-11-06 2016-05-23 日立オートモティブシステムズ株式会社 Thermal type air flow meter
JP6933591B2 (en) * 2018-02-23 2021-09-08 株式会社ミクニ Throttle device and fuel evaporative emission recovery system
US11112808B2 (en) * 2019-06-28 2021-09-07 The Boeing Company Fluid flow restrictor device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827813A (en) * 1923-09-08 1931-10-20 Westinghouse Electric & Mfg Co Flow indicator
GB285994A (en) * 1926-11-25 1928-02-27 John Lawrence Hodgson Improvements in rotary gas meters
US1870849A (en) * 1928-06-09 1932-08-09 Hodgson John Lawrence Flow quantity meter
US2243252A (en) * 1938-02-04 1941-05-27 Builders Iron Foundry Fluid flow meter
GB514376A (en) * 1938-02-04 1939-11-07 George Thomas Huxford Improvements in or relating to rotary fluid flow meters
US3603148A (en) * 1968-10-18 1971-09-07 Sotakazu Rikuta Flow meter of the area type
US3559482A (en) * 1968-11-27 1971-02-02 Teledyne Inc Fluid flow measuring apparatus
FR2085184B1 (en) * 1970-01-08 1973-07-13 Lafitte Rene
US3688576A (en) * 1970-07-24 1972-09-05 Illinois Testing Laboratories Improved air velocity measuring system and method for its calibration
DE2151774C3 (en) * 1971-10-18 1980-04-03 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for an internal combustion engine
US3975951A (en) * 1974-03-21 1976-08-24 Nippon Soken, Inc. Intake-air amount detecting system for an internal combustion engine
DE2843019A1 (en) * 1978-10-03 1980-04-24 Bosch Gmbh Robert METHOD AND DEVICE FOR MEASURING THE AIR MASS SUPPLIED TO AN INTERNAL COMBUSTION ENGINE
US4232549A (en) * 1978-12-06 1980-11-11 Eaton Corporation Two stage flowmeter

Also Published As

Publication number Publication date
EP0025149A3 (en) 1983-04-13
EP0025149B1 (en) 1986-02-26
JPS6045806B2 (en) 1985-10-12
EP0025149A2 (en) 1981-03-18
JPS5630616A (en) 1981-03-27
EP0025149B2 (en) 1989-10-18
US4381668A (en) 1983-05-03

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee